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[LLVM][DWARF] Chnage order for .debug_names abbrev print out #80229

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merged 6 commits into from
Feb 2, 2024
Merged

[LLVM][DWARF] Chnage order for .debug_names abbrev print out #80229

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da9e927
[LLVM][DWARF] Chnage order for .debug_names abbrev print out
ayermolo Feb 1, 2024
7682bb9
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ayermolo Feb 1, 2024
deb32f4
moved struct members around, marked const
ayermolo Feb 1, 2024
23795c5
removed llvm
ayermolo Feb 1, 2024
e7f39c3
switched to llvm::sort
ayermolo Feb 2, 2024
a98f430
removed begin/end
ayermolo Feb 2, 2024
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8 changes: 5 additions & 3 deletions llvm/include/llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h
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Original file line number Diff line number Diff line change
Expand Up @@ -412,13 +412,15 @@ class DWARFDebugNames : public DWARFAcceleratorTable {

/// Abbreviation describing the encoding of Name Index entries.
struct Abbrev {
uint32_t Code; ///< Abbreviation code
uint64_t AbbrevOffset; /// < Abbreviation offset in the .debug_names section
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uint32_t Code; ///< Abbreviation code
dwarf::Tag Tag; ///< Dwarf Tag of the described entity.
std::vector<AttributeEncoding> Attributes; ///< List of index attributes.

Abbrev(uint32_t Code, dwarf::Tag Tag,
Abbrev(uint32_t Code, dwarf::Tag Tag, uint64_t AbbrevOffset,
std::vector<AttributeEncoding> Attributes)
: Code(Code), Tag(Tag), Attributes(std::move(Attributes)) {}
: AbbrevOffset(AbbrevOffset), Code(Code), Tag(Tag),
Attributes(std::move(Attributes)) {}

void dump(ScopedPrinter &W) const;
};
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18 changes: 12 additions & 6 deletions llvm/lib/DebugInfo/DWARF/DWARFAcceleratorTable.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -493,7 +493,7 @@ static bool isSentinel(const DWARFDebugNames::AttributeEncoding &AE) {
}

static DWARFDebugNames::Abbrev sentinelAbbrev() {
return DWARFDebugNames::Abbrev(0, dwarf::Tag(0), {});
return DWARFDebugNames::Abbrev(0, dwarf::Tag(0), 0, {});
}

static bool isSentinel(const DWARFDebugNames::Abbrev &Abbr) {
Expand All @@ -505,7 +505,7 @@ DWARFDebugNames::Abbrev DWARFDebugNames::AbbrevMapInfo::getEmptyKey() {
}

DWARFDebugNames::Abbrev DWARFDebugNames::AbbrevMapInfo::getTombstoneKey() {
return DWARFDebugNames::Abbrev(~0, dwarf::Tag(0), {});
return DWARFDebugNames::Abbrev(~0, dwarf::Tag(0), 0, {});
}

Expected<DWARFDebugNames::AttributeEncoding>
Expand Down Expand Up @@ -540,7 +540,7 @@ DWARFDebugNames::NameIndex::extractAbbrev(uint64_t *Offset) {
return createStringError(errc::illegal_byte_sequence,
"Incorrectly terminated abbreviation table.");
}

const uint64_t AbbrevOffset = *Offset;
uint32_t Code = Section.AccelSection.getULEB128(Offset);
if (Code == 0)
return sentinelAbbrev();
Expand All @@ -549,7 +549,7 @@ DWARFDebugNames::NameIndex::extractAbbrev(uint64_t *Offset) {
auto AttrEncOr = extractAttributeEncodings(Offset);
if (!AttrEncOr)
return AttrEncOr.takeError();
return Abbrev(Code, dwarf::Tag(Tag), std::move(*AttrEncOr));
return Abbrev(Code, dwarf::Tag(Tag), AbbrevOffset, std::move(*AttrEncOr));
}

Error DWARFDebugNames::NameIndex::extract() {
Expand Down Expand Up @@ -847,8 +847,14 @@ void DWARFDebugNames::NameIndex::dumpForeignTUs(ScopedPrinter &W) const {

void DWARFDebugNames::NameIndex::dumpAbbreviations(ScopedPrinter &W) const {
ListScope AbbrevsScope(W, "Abbreviations");
for (const auto &Abbr : Abbrevs)
Abbr.dump(W);
std::vector<const Abbrev *> AbbrevsVect;
for (const DWARFDebugNames::Abbrev &Abbr : Abbrevs)
AbbrevsVect.push_back(&Abbr);
llvm::sort(AbbrevsVect, [](const Abbrev *LHS, const Abbrev *RHS) {
return LHS->AbbrevOffset < RHS->AbbrevOffset;
});
for (const DWARFDebugNames::Abbrev *Abbr : AbbrevsVect)
Abbr->dump(W);
}

void DWARFDebugNames::NameIndex::dumpBucket(ScopedPrinter &W,
Expand Down
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